Do not show notifications when in fullscreen or screensaver mode....

chrome/browser/fullscreen_win.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/fullscreen.h"
+
+#include <windows.h>
+#include <shellapi.h>
+
+static bool IsPlatformFullScreenMode() {
+  // SHQueryUserNotificationState is only available for Vista and above.
+#if defined(NTDDI_VERSION) && (NTDDI_VERSION >= NTDDI_VISTA)
+  QUERY_USER_NOTIFICATION_STATE state;
+  if (FAILED(SHQueryUserNotificationState(&state)))
+    return false;
+  return state == QUNS_RUNNING_D3D_FULL_SCREEN ||
+         state == QUNS_PRESENTATION_MODE;
+#else
+  return false;
+#endif
+}
+
+static bool IsFullScreenWindowMode() {
+  // Get the foreground window which the user is currently working on.
+  HWND wnd = ::GetForegroundWindow();
+  if (!wnd)
+    return false;
+
+  // Get the monitor where the window is located.
+  RECT wnd_rc;
+  if (!::GetWindowRect(wnd, &wnd_rc))
+    return false;
+  HMONITOR monitor = ::MonitorFromRect(&wnd_rc, MONITOR_DEFAULTTONULL);
+  if (!monitor)
+    return false;
+  MONITORINFO monitor_info = { sizeof(monitor_info) };
+  if (!::GetMonitorInfo(monitor, &monitor_info))
+    return false;
+
+  // It should be the main monitor.
+  if (!(monitor_info.dwFlags & MONITORINFOF_PRIMARY))
+    return false;
+
+  // The window should be at least as large as the monitor.
+  if (!::IntersectRect(&wnd_rc, &wnd_rc, &monitor_info.rcMonitor))
+    return false;
+  if (!::EqualRect(&wnd_rc, &monitor_info.rcMonitor))
+    return false;
+
+  // At last, the window style should not have WS_DLGFRAME and WS_THICKFRAME and
+  // its extended style should not have WS_EX_WINDOWEDGE and WS_EX_TOOLWINDOW.
+  LONG style = ::GetWindowLong(wnd, GWL_STYLE);
+  LONG ext_style = ::GetWindowLong(wnd, GWL_EXSTYLE);
+  return !((style & (WS_DLGFRAME | WS_THICKFRAME)) ||
+           (ext_style & (WS_EX_WINDOWEDGE | WS_EX_TOOLWINDOW)));
+}
+
+static bool IsFullScreenConsoleMode() {
+  // We detect this by attaching the current process to the console of the
+  // foreground window and then checking if it is in full screen mode.
+  DWORD pid = 0;
+  ::GetWindowThreadProcessId(::GetForegroundWindow(), &pid);
+  if (!pid)
+    return false;
+
+  if (!::AttachConsole(pid))
+    return false;
+
+  DWORD modes = 0;
+  ::GetConsoleDisplayMode(&modes);
+  ::FreeConsole();
+
+  return (modes & (CONSOLE_FULLSCREEN | CONSOLE_FULLSCREEN_HARDWARE)) != 0;
+}
+
+bool IsFullScreenMode() {
+  if (IsPlatformFullScreenMode())
+    return true;
+  if (IsFullScreenWindowMode())
+    return true;
+  if (IsFullScreenConsoleMode())
+    return true;
+  return false;
+}